MVS Forums Contributor BKM98 S70 T5 takes the replace water pump job and absolutely slays it. Here’s how he did it:
What to do with a now 245K Volvo purchased in Jan 2012 with enough minor issues that it can’t be sold and yet due to financial restraints it needs to be kept running without putting any more money in further unless it was absolutely necessary? It still runs well and was able to passed the CA smog but now has a Water Pump leak? Should i replace the water pump?
Tried a temp fix but was very temp
http://www.matthewsvolvosite.com/forums … =1&t=59519
Perhaps this may be obvious to the seasoned DIY’er’s or even some regular guys like me but after mulling it over and with the help of a couple of links I decided to tackle the Water Pump replacement by removing only the Hydraulic Tensioner. There were many other excellent links in the various Volvo forums (this one included) that some may find to be more helpful but the following provided me with the larger picture of what I needed to do.

1998 S70 – Replace Water Pump w/Tensioner Removal Only
The first picture in this site provided a clear view of the location of the Water Pump though the motor did not use the Hydraulic Tensioner.
http://wakingupthemoose.blogspot.com/20 … chive.html
This helped expose the entire assembly and showed that only Tensioner removal was necessary to get to the Water Pump
Good full picture of the job. The bungee cord was helpful for Tensioner removal and re-installation
http://volvospeed.com/volvo_repairs_how … hange.html